... :5-12MBV&SGS Description15CrMo,34CrMo4,Cr5Mo Alloy steel pipe StandardASTM A213,A200,A335,DIN17175,JIS G3458 G3462, ... ,cold rolledSurfacePolished,black,bright.ApplicationElectrical Resistance,Bolier Pipe, Heat Exchanger Tubes,Petroleum and Oil,Chemical Industry, Energy sources, ... we offer --Seamless steel pipe : API 5L Certified / ASTM A106 Gr B / Boiler pipe St35.8--Alloy pipe : 35CrMo , 34CrMo4 ...